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                    <h1 class="menu-title">Lithium 双引擎 v0.0.1</h1>

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                        <h1 id="崩溃报告"><a class="header" href="#崩溃报告">崩溃报告</a></h1>
<p>目前支持生成 Breakpad/Crashpad 格式的崩溃文件.</p>
<p>不同的进程, 其生成的崩溃文件位置也不一样, 可以在这两个地方查找:</p>
<ul>
<li>/tmp/chromium-renderer-xxxx.dmp</li>
<li>$HOME/.lnks/lithium2/CrashReport/xxx.dmp</li>
</ul>
<h2 id="自动上传崩溃报告"><a class="header" href="#自动上传崩溃报告">自动上传崩溃报告</a></h2>
<p>如果浏览器引擎出错, 就会读取 <code>crash_reporter.cfg</code> 文件中定义的
<code>ServerURL</code> 属性, 它指定了上传服务器的地址, 默认值为空, 即表示禁止上传.</p>
<p>可以根据需要修改成本机可访问的服务器地址, 比如:
<code>http://localhost:8080/crash-report</code>,</p>
<p>同时还需要一个收集报告的服务器, <code>crash_server.py</code> 是一个简单的示例服务,
使用也很简单:</p>
<pre><code class="language-bash">python3 crash_server.py 8080 crash-report
</code></pre>
<p>这里的 <code>8080</code> 指定了监听的端口号, <code>crash-report</code> 指定保存的目录名.</p>
<p>完成以上的操作后, 就可以在服务器端自动收集客户机器上的崩溃报告了.</p>
<h2 id="如何查看崩溃文件"><a class="header" href="#如何查看崩溃文件">如何查看崩溃文件</a></h2>
<p>使用以下命令:</p>
<pre><code class="language-bash">minidump_stackwalk SYMBOL.dmp ./symbols
</code></pre>
<p>其中 <code>SYMBOL.dmp</code> 是收集到的崩溃记录, 而 <code>symbols</code> 目录是编译时生成的调试符号</p>
<h2 id="如何维护调试符号"><a class="header" href="#如何维护调试符号">如何维护调试符号</a></h2>
<p>第一步就是生成调试符号: 在编译完 lithium-frontend 项目之后, 需要从 <code>lithium</code> 可执行
文件中提取出调试符号, 这一操作可以用 <code>breakpad</code> 提供的 <code>dump_syms</code> 命令完成.</p>
<ol>
<li>
<p>下载 breakpad: <code>git clone -b rusty https://github.com/RustyProject/breakpad</code>
使用 rusty 分支, 该分支支持 cmake 工具.</p>
</li>
<li>
<p>编译这个项目: </p>
</li>
</ol>
<pre><code class="language-bash">cmake -G Ninja -B build -DCMAKE_BUILD_TYPE=Release
cmake --build build
</code></pre>
<p>编译成功之后, 会在 <code>build</code> 目录生成 <code>dump_syms</code> 可执行文件</p>
<ol start="3">
<li>
<p>将 <code>dump_syms</code> 安装到 <code>PATH</code> 变量可访问的路径中, 以备调用</p>
</li>
<li>
<p>在编译完成 <code>lithium</code> 项目后, 调用 <code>dump_syms</code> 命令行成对应的 <code>lithium.sym</code> 调试文件:</p>
</li>
</ol>
<pre><code class="language-bash">dump_syms build/src/lithium &gt; build/src/lithium.sym
</code></pre>
<ol start="5">
<li>上传调试符号, 使用以下命令:</li>
</ol>
<pre><code class="language-bash">./tools/upload-symbol.sh ./build/src/lithium.sym
</code></pre>
<p>目前, 用于托管 symbol 文件的服务器在本地网络中, 还不保证它一直可用, 如果上传失败了,
联系我.</p>
<h2 id="何时需要生成调试符号"><a class="header" href="#何时需要生成调试符号">何时需要生成调试符号</a></h2>
<p>每次发正式版的安装包时, 都应该确认该包生成了对应的调试符号并且成功上传.</p>
<p>目常开发时, 不应该上传它们!</p>
<h2 id="测试"><a class="header" href="#测试">测试</a></h2>
<p>打开以下链接可以测试不同进程的崩溃:</p>
<ul>
<li>主进程 crash: <code>chrome://inducebrowsercrashforrealz</code></li>
<li>Renderer 进程 crash: <code>chrome://crash</code></li>
<li>GPU 进程 crash: <code>chrome://gpucrash</code></li>
</ul>

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